Size fractionation of olive mill wastewater (COD:155000 mg/L; TOC:40000 mg/L; BOD5:37700 mg/L; total phenols:4100 mg/L; absorbance at 395 nm:145 cm−1) before and after FeCl3 coagulation, Ca(OH)2 precipitation, electrocoagulation and the Fenton process was investigated. Particulate organic compounds were the major components of COD (54%), TOC (43%), BOD5 (43%), absorbance (57%), followed by an appreciable soluble size fraction. For the total phenols parameter, a dominant fraction (54%) appeared in the colloidal (5–8 nm) size range besides significant particulate (22%) and soluble (24%) size fractions. FeCl3 coagulation and Ca(OH)2 precipitation appeared to be most efficient in organic matter removal, whereas electrocoagulation was superior in phenolics removal. No shift in the size distribution pattern was observed after chemical treatment since phase–transfer was the dominant removal mechanism of the selected processes. The highest inhibition of the Vibrio fischeri photobacteria was observed in the particulate size range and decreased in the solube size range due to the elimination of the phenolic content.

PeCOD® is a patented technology that can determine COD by measuring photocurrent charges originating from oxidation of the organic contaminants present in a water sample. Three PeCOD® analyzer units were implemented at three different facilities, representative of key food and beverage sub-sectors–a winery, a bakery and a brewery–to undertake “real-time” measurement and analysis of effluent wastewater. These real-time COD analyzers were tested at each facility for a duration of 4-6...

Abstract
The effectiveness of In-Pipe Technology (IPT) patented sewer collection system engineered bioaugmentation on i) influent wastewater loads to wastewater treatment plant (WWTP), ii) WWTP performance, and iii) effluent quality, was a demonstrated at a domestic sequencing batch reactor (SBR) WWTP (Sewer District #20) in Suffolk County, Long Island, New York in collaboration with the Suffolk County Department of Public Works (SCDPW) and the New York State Energy Research Development Authority (NYSERDA). The...

A new method based on a dimensionless analysis of the BOD first order model is used to determine the model coefficients (k and L). Curves for the theoretical first order model for the first five days of BOD divided by the theoretical BOD5 for different k values are drawn. The experimental BOD1 through BOD5 are made dimensionless by dividing them with the experimental BOD5. These values are connected smoothly using cubic spline method and MATLAB. The area below these cubic spline equations is compared to the area...

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